Specifications

Connecting Cisco ATM Network Modules to the Network
ATM OC-3 Network Modules
6
Connecting Cisco ATM Network Modules to the Network
• NM-1A-OC3MM-1V provides an MM fiber uplink port and circuit emulation service. See
Figure 10.
• NM-1A-OC3SMI-1V provides an SMI fiber uplink port and circuit emulation service. See
Figure 11.
• NM-1A-OC3SML-1V provides an SML fiber uplink port and circuit emulation service. See
Figure 12.
Circuit emulation service allows the network module to carry voice traffic, such as telephone calls and
faxes, over an ATM network simultaneously with data traffic.
If you are using the ATM OC-3/STM-1 circuit emulation service network module, you need both the
network module and a 1- or 2-port T1 or E1 multiflex trunk interface card (VWIC-1MFT-T1,
VWIC-1MFT-E1, VWIC-2MFT-T1, VWIC-2MFT-E1, VWIC-2MFT-T1-DI, or VWIC-2MFT-E1-DI)
for a voice connection. You can install one multiflex trunk interface card (providing up to two voice
ports) in the ATM OC-3/STM-1 circuit emulation service network module. If a multiflex trunk interface
card is not installed, the ATM OC-3/STM-1 circuit emulation service network module continues to
perform data-routing functions.
Note 1- or 2-port T1 or E1 multiflex trunk interface cards that support G.703 (VWIC-1MFT-G703,
VWIC-2MFT-G703) are not supported in ATM OC-3/STM-1 circuit emulation service network
modules.
Figure 7 ATM OC-3 Multimode Fiber Network Module
Figure 8 ATM OC-3 Single-Mode Intermediate-Reach Fiber Network Module
Figure 9 ATM OC-3 Single-Mode Long-Reach Fiber Network Module
EN
ATM
1A-OC3MM
14860
ATM 0
AISOOFFERFRCLK
CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1
LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1
EN
ATM
1A-OC3SMI
14858
ATM 0
AISOOFFERFRCLK
CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1
LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1
EN
ATM
1A-OC3SML
14859
ATM 0
AISOOFFERFRCLK
CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1
LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1